A252052 Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8

10084, 14924, 26840, 45444, 191804, 398502, 658902, 2988638, 6379018, 11153632, 52020290, 111908868, 199878996, 963130024, 2076327370, 3762297344, 18635844314, 40074236458, 72960957866, 370050794622, 791436034456

Offset

1,1

Comments

Column 7 of A252053

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 69

Formula

Empirical recurrence of order 69 (see link above)

Example

Some solutions for n=4
..1..0..1..3..1..0..1..3..1....2..2..0..3..1..1..2..2..0
..1..2..1..2..1..2..1..2..1....0..1..1..2..2..3..0..1..1
..0..2..3..2..0..2..3..2..0....2..2..3..0..1..1..2..2..3
..3..1..0..1..3..1..0..1..3....3..1..1..2..2..3..0..1..1
..2..1..2..1..2..1..2..1..2....2..2..3..0..1..1..2..2..3
..0..3..2..0..2..0..2..0..2....0..1..1..2..2..0..3..1..1

Crossrefs

Sequence in context: A217867 A157288 A230033 * A083965 A161022 A293686

Adjacent sequences: A252049 A252050 A252051 * A252053 A252054 A252055

Keyword

nonn

Author

R. H. Hardin, Dec 13 2014

Status

approved